Sorry, now I understand. The settings in the App is lost. This have been reported earlier App lost Settings - #5 by Henrik and for some it helped to reinstall the App and for some that did not help. The problem is reported for investigation. Do you use Android or iOS?
Another way is to enter the http address in the web browser and when the blue login box appear click on the link below the box to go to the mobile interface. See if that works better until the App problem is investigated.
-Henrik